<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>6.2</title>
	<script src="js/vue.js"></script>
	</head>
	<body>
		<div id="app">
			<counter></counter>
			<counter></counter>
			<counter></counter>
		</div>
	</body>
	<script>
		Vue.component('counter',{
			data:{
					num:0
			},
			template: '<button @click="num++">点击{{num}}次</button>'
		})
		let vm = new Vue({
			el:'#app'
		})
	</script>
</html>